11Now if perfection was through the Levitical priesthood (for on the basis of it the people received the Law ), what further need was there for another priest to arise according to the order of Melchizedek, and not be designated according to the order of Aaron?

15For this reason He is the mediator of a new covenant, so that, since a death has taken place for the redemption of the transgressions that were committed under the first covenant, those who have been called may receive the promise of the eternal inheritance.

4By faith Abel offered to God a better sacrifice than Cain, through which he obtained the testimony that he was righteous, God testifying about his gifts, and through faith, though he is dead, he still speaks.